Tire-valve.



J. A. BOWDEN.

NRE VALVE.

APPLICATION man ma. 19, was.

Patented Jan. 30, 191?,

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` thereby afford communication between they EEB fl J'NES A. BOW'DEN, OF LOS ANGELES, CLIFQBJNA, ASSGNGR TO A. SCHRADERS SON, INCQRBORATED, OF NEW YORK, lil'. Y., A CORPORATION OF NEN YORK.

eran-venian.

To all whom t may concern Beit known thatl, JUNrUs A. Bomann, a citizen of the United States, residing at Los Angeles7 in the county of Los Angeles and State of California, have invented ay new and useful Tire-Valve. of which the following is a specication'.

This invention relates to valves for pneu'- matic tires. and particularly to that type in which all` parts of the valve are movable 'from the outer end of the valve body.

One object of the invention is to provide tor securing an airtight `closure between the removable cap and the valve body at a point within the valve body near the outer end thereof.

Another object is to so construct the valve that it will instantly and automatically open when an air gage of the pocket type is pressed against the end of the valve, and

interior of the tire and the gage, enabling air to pass from the tire. to the gage.

Another object is to provide means for securing the packing of the valve at apredeterniined tension and avoid any excessive expansion and reduction of the air passage which would otherwise occur.

nother object is to provide an inexpensive and positive means for automatically `guiding theA valve plunger.

.-xnothcr .object is to provide a larger air `passage than in the present standard tire valve body in universal use.

A tur-ther object is-to provide a separable part which is held by frictional contact with therinner wall of the valve body and forms y a seat for the inner end of the valve spring,

whereby a considerable advantage in manutacture is secured.

Another important object isto employ the present standard size of `valve body now in universal use and so construct the inter nal valve mechanism that a larger air passage in the space given is obtained,'without sacrificing any advantages or necessary features in valves now in successful use.

Referring to the drawings: Figure l is a side elevation showing the exterior appear ance of the' valve. Fig. 2 is a longitudinal section through the valve7 the body having been contracted in length. F ig. 3 is a side elevation of the inner valve mechanism removed. Fig. l is a persi .otive of the external cap with hollow pin removed. Fig. 5

Specification of Letters Patent.

rat-eaten aan. so, Leia.

Application' :med February 19, i913. Serial No. 749,548.

is a perspective of the hollow cap pin.

Fig. v6 is a perspective of the seat retainer. Fig.

7v is a perspective of the fiber portion of the removable seat. Fig.y S is a perspective of the rubber portion of the 'removable seat. 6 Fig. 9 is a perspective of the valve plunger. Fig. l0 is a perspective of the spring. Fig. l1 is a. perspective of the spring scat; Fig.v 12 is a section on line 12-a'1-, Fig. 2.

The valve body l is externally ot the usual construction and'dimensioiis, and in` ternally is provided with an airtight conduit 2 which extends from thc inner end of the body to a point near the outer end thereof, the outer portion et' the valve body hav- 70 ing an enlarged bore 3 forming a guttered shoulder 4 which presents a slightly vraised inner edge upon which a removable yielding valve seat 5 rests, and is firmly held in airtight engagement therewith by'a superposed ,75 seat member G formed preferably of fiber, the latter being held in place by a seat retainer, comprising a sleeve` 7, the upper portion of which is threaded kand screwed, upon internal threads 8 formed in'the upper por- 80 tion only of the reduced outer end of the valve body. the threads 8 extending a definite distance to act as a positive stop Jfor the sleeve T, preventing the latter from being inserted farther thanthe-exact point re- 85 quired to place the rubber seat 5 under the proper pressure to give a perfect airtight engagement with the shoulder l. This insures that whenever the valve is replaced that the seat 5 will never be under excessive gg pressure. The upper edge of the seat retainer 7 is slotted at 9 to enable it to be easily screwed into or out of position by a screw driver.

The valve plunger l0 slides in the air cone5 duit 2 below the seatl 5 and has an upper cupped portion 11 presenting a thin edge 19.' which isyieldingly held against the rubber seat 5 by a'spring lifthe tension otl which is suliicient to cause the edge 12 to slightly in- 3.00 dent the rubber 5 sulliciently to form a perrect airtight closure without additional means except the air pressure in the tire against the plunger. A pin 1Q is driveninto the valve plunger l() and becomes a perm5 lnanent part thereof. 'lhis pin projects to a point substantially flush with the outer end of the valve body and enables the valve to be automatically opened by pressing a pocket tire gage on. the outer end of the valve body 11@ 'thus causing the gage to indicate the nngs'pressure in the tire, and by removal e tas valve automatically' closes. simply pressing on the end of this pin may be deflated or the -valve may be ed automatically by a hose connection. he upper end of the spring 13 eneircles and grips a boss 14 on the lower end of the valve plunger and the intermediate portion the valve plunger is polygonal in cross section, for example, triangular, the corners having a sliding fit with the walls of the air conduit Z forming a guide for the plunger, also forming series of longitudinal air pasi-S sages, ivliieh in the aggregate present a large cross sectional area which allows free passage of air with minimum restriction. "This portion of the plungeil which has a sliding lit in the air passage always holds the plun-'` au ger in perfect longitudinal alinement with the valve seat anuvmaintains the cupped knife ed e of the plunger in a transverse i 1 l h plane, parallel with'the valve seat 5 so thatv to hold it from displacement under allcon.

ditions of use. rlhis, construction obviates the use of two sizes of` drills in order to 85 form a shoulder for the spring `and also enables the larger size drill to be used eorre. spending to the external diameter of the ring, also allor-ds drilling to the center from one end and to the center from the other end. 'This is advantageous in manufacture because 'of the diliieulty in boring the long ail' passage ith smally drills.

l? cap which is screwed on the readed end ofthe valve ,hollow pin 18, the latter 'i and .having an eX- loiver end 19 which when sorefed down, wedges into the e opening in the fiber seat additional closure which 1 of air from the valve body, oniatic valve meehanisni for to oei-fecal); hold 4the air. lt f' that this Closure effect a poi-1t some distano of valve body and c" tient as where such wainst the outer n use the ber ti together by ion and thus form Vire inembe l s bodybei s .viveie i ternally 'the aan if ir e o ure points two ofside opaosing. These t i het4 een the valve :n :L i ivhicn are en the oute l, 65 closure points are fir This seat rape@ plunger and rubber seat 5 and between the shoulder 4 and rubber seat 5 and betvv een the hollow pin 18 and fiber 6. l/Vheneveritl isi desired to remove the valve, the cap' 17 having rst been withdrawn, the sleeve 7 is then unscreived, whereupon the seats 5, 6, readily slide outv and the plunger with attached spring 13 also slides out. Thus it will be seen that the automatic valve consists of a very few .parts and these parts are slidthe seat, a valve, plunger slidable in said air passage toi Yard and from said seat, a spring l seat slidably secured by fritional Contact in 'the uniform part of said an' passage, anda spring between said seat .and plunger.

Q'. ln a tire valve, a valve body With-an air passage having an enlarged outer bore,

thereby foi-ming an annular shoulder, a seat of yielding material resting againstsaid shoulder, a seat retainer comprising a sleeve removably secured in the outer end of thev valve body, and a seat of harder material than said yielding seat between the yielding seat and sleeve, and a valve plunger in the air passage movable against said yielding seat, said valve plunger' having a pin at one end, said pin extending to the outer end of said valve body, and means below said pin adapted to guide said plunger.

ln a tire valve, a valve body with an air passage having an enlarged outer bore thereby forming a shoulder, `a perforated seat of yielding material resting against said shoulder, a` sleeve vremovably secured in the enlarged bore, a washer bet-Ween the sleeveand yielding seat, and a valve plunger in the air passage movable against the inner face of the yielding'seat, said plunger belowY said seat having guiding` means siidably fitting the Wall of the air passage,.an a pin secured to aid plunger', said pin extending to the. oute end of said valve body. i

l. In a tire valve, a valve body with an airpassage and having an enlarged outer bore with a shoulder, a-rubber-jseat on said shoulder, a seat composed of hard yielding material ou the rubber seat, a sleeveI screwed in the enla'rjged portion holding saidmaterial and rubber seats in position a valve plunger in the air passage movable against y the rubber seat, and means having a sliding fu'- ivitl; the wall of the air passage for guiding said plunger below said shoulder.l 5. ln a tire valve, a valve body with an air passage andv having an enlarged outer valve plunger having a cupped end forming a thin edge adapted to seat against the rubber seat, said plunger having uide portions below said seat with a sli ing fit in the air passage, a spring bearing against one end of the vvalve plunger to move it toward the rubber seat, and means in the alve body supporting the inner end of the spring.

(3. In a tire-l valve, a valve body havingv an air passage with an enlarged bore tormiing a shoulder, a yleldlng seat on said shoul` der, a seat retainer comprising a sleeve screwed in the enlarged bore for holding the yielding seat with an air-tight lit against said shoulder, the screw on said sleeve being limited and forming a stop to bring the inner end of the sleeve to a delinite point.

7. -ln a tire valve, a valve body with an air passage. and having an enlarged outer bore with a shoulder, a -yielding seat in air- ,tight engagement with said shoulder, a

valve in the air passage movable against the inner side of said seat, an outer cap on-lhe valve body, and a hollow pin carried by said cap and projecting into the enlarged bore, the inner end of said pin movable against the opposite side of the yielding seat.

In a tire valve, a valve body with an air passage, a removable flexible valve seat therein, a valve plunger movable against the inner side of the seat, a cap screwed on the end of the valve body, and a hollow pin revolubly carried by said cap, the inner end Jof the pin being beveled and movable against the flexible seat to form an airtight engagement with the seat.

9. In a tire valve, a valve body with an air passage having an enlarged outer bore, thereby forming an annular shoulder, a seat ot' yielding materialv resting against said shoulder, a Iseat retainer comprising a sleeve removably secured in the outer end of the valve body, a washer between the yielding ,seat and sleeve, a valve' plunger in the air passage movable against said yielding seat, said valve plunger having a pin at one end, said pin extending to the outer end of said valve body, and means below said. pin adapted to guide said plunger.

l0. ln a tire valve, a valve bo'dy with an air liassage, a yielding valve seat therein, a metal valve plunger movable against the inner side ot said seat. said valve plunger having a portion polygonal in cross section orming a plurality of air passages, a sl1dable spring seat frictional-ly retained in the air passage, and a spring between the spring seat and polygonal portion.

11. ln a tire valve, a valve body with an air passage, a flexible seat removably1 secured in said air passage,'a metal valve plunger movable against the inner face of said seat, said plunger having a boss on its inner end, a spring attached at its outer end to said boss, and a spring seat in said air passage and supporting the inner end of the spring, said plunger, between the boss and its outer end, having guide means.

l2. In a tire valve, a valve body with an air passage, a yielding seat in said air passage, a valve plunger movable in the air passage against the inner face of said seat, a pin projecting from said valve plunger to a point near the outer end of the valve body, a cap on the valve body, and a hol low pin carried b v said cap and slidably receiving 'said first pin, the inner end ot' said hollow pin. being movable against the other side of the yielding seat to form an airtight closure.

13. In tire valve, a body having an interior bore, a yielding valve seat within said bore and means for retaining said valve-seat in said bore, said means comprising a hollow sleeve fitting within said bore and adapted to press against `said valve-seat, and a piece of stil'll material between said sleeve and said yielding valveseat.

14. In a tire valve, a body having an interior bore, a valve seat therein, a valve adapted to move against one side of said seat, and a vcap having a projecting part adapted to Contact with the other side of said seat. thus formingia second closure.

l5. In a tire valve, a body having an interior bore, a valve seat therein, a valve adapted to move against one sideV of said seat, and a cap having a swivelled projecting part adapted to Contact with the other side of said seat, thus forming a second closure.

ln testimony whereof, I have hereunto set my hand at Los Angeles, California, this llth day olt lfeliruary. 1913.

l JINIVS A. BOWDEN. ln presence of- (Yl. T. Hacnnnv,

Maurin M, LANGE. 

